# US 11,909,122 B2 · Moving object mounted radar antenna, module for moving object mounted radar antenna, and moving object mounted radar antenna system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,909,122 B2 - Document ID: US11909122B2 - Status: Granted - Kind: B2 - Application number: 17/636,807 - Filed: 2020-07-15 - Published: 2022-09-22 - Granted: 2024-02-20 - Earliest claimed: 2019-08-26 - Assignees: Sony Group Corporation - Applicants: Sony Group Corporation - Inventors: Kenichi Kawasaki; Takahiro Takeda - Web page: https://patentgrep.com/patent/US11909122B2 ## CPC - H01Q 13/106: {Microstrip slot antennas (patch antenna elements H01Q9/0407)} - H01Q 21/24: Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction {(circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001)} - G01S 13/931: of land vehicles - H01Q 1/273: {Adaptation for carrying or wearing by persons or animals} - H01Q 1/3233: {particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems} - H01Q 1/3283: {side-mounted antennas, e.g. bumper-mounted, door-mounted (mounted on windscreens H01Q1/1271)} - H01Q 1/38: formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142)} - H01Q 1/525: {between emitting and receiving antennas} - H01Q 9/0407: {Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40)} - H01Q 9/30: with feed to end of elongated active element, e.g. unipole (H01Q9/44 takes precedence) - H01Q 13/02: Waveguide horns - H01Q 15/14: Reflecting surfaces; Equivalent structures {(electromagnetic shields H01Q1/526)} - H01Q 21/005: {Slotted waveguides arrays} - H01Q 21/065: {Patch antenna array} - H01Q 21/28: Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)} - G01S 2013/93271: {in the front of the vehicles} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## Abstract Provided is a moving object mounted radar antenna including an antenna substrate that includes a main flat surface facing an object, a first antenna element that is allowed to receive a polarization component in a first polarization direction parallel to the main flat surface, a second antenna element that is allowed to receive a polarization component in a second polarization direction perpendicular to the main flat surface, and a separation portion that electrically separates the first antenna element and the second antenna element. Each of the first antenna element, the second antenna element, and the separation portion being provided on the antenna substrate. ## Claims ### Claim 1 A moving object mounted radar antenna, comprising: an antenna substrate including a main flat surface that faces an object; a first antenna element configured to receive a polarization component in a first polarization direction parallel to the main flat surface; a second antenna element configured to receive a polarization component in a second polarization direction perpendicular to the main flat surface; a separation portion configured to electrically separate the first antenna element and the second antenna element; and a third antenna element configured to receive a polarization component in a third polarization direction, wherein the third antenna element is a slot antenna element including a slot that extends along the first polarization direction on the main flat surface, and each of the first antenna element, the second antenna element, third antenna element, and the separation portion is on the antenna substrate. ### Claim 2 (depends on 1) The moving object mounted radar antenna according to claim 1, wherein the second antenna element includes a monopole antenna element; and the monopole antenna element includes a via that penetrates the antenna substrate along a thickness direction of the antenna substrate. ### Claim 3 (depends on 1) The moving object mounted radar antenna according to claim 1, wherein the second antenna element includes an SIW antenna element on the main flat surface. ### Claim 4 (depends on 3) The moving object mounted radar antenna according to claim 3, wherein the SIW antenna element is a horn antenna that includes a plurality of patterns in a horn shape on the main flat surface. ### Claim 5 (depends on 1) The moving object mounted radar antenna according to claim 1, wherein the first antenna element is a slot antenna element including a slot that extends along a direction perpendicular to the first polarization direction on the main flat surface. ### Claim 6 (depends on 1) The moving object mounted radar antenna according to claim 1, wherein the first antenna element is a patch antenna element that includes a metal pattern on the main flat surface. ### Claim 7 (depends on 1) The moving object mounted radar antenna according to claim 1, wherein the separation portion includes at least one of a ground via electrically connected to a ground, ground wiring electrically connected to the ground, an absorption element including an absorbent material configured to absorb an electromagnetic wave, or a magnetic element including a magnetic substance configured to act on an electric field. ### Claim 8 (depends on 1) The moving object mounted radar antenna according to claim 1, wherein the third polarization direction is parallel to the main flat surface and orthogonal to the first polarization direction. ### Claim 9 (depends on 1) The moving object mounted radar antenna according to claim 1, wherein the main flat surface includes: a first region in which that includes a plurality of first antenna elements; and a second region in which that includes a plurality of second antenna elements; and the separation portion is located between the first region and the second region. ### Claim 10 (depends on 9) The moving object mounted radar antenna according to claim 9, wherein the second region is around the first region. ### Claim 11 (depends on 1) The moving object mounted radar antenna according to claim 1, mounted on one moving object selected from a vehicle, a ship, a drone, and a robot. ### Claim 12 (depends on 11) The moving object mounted radar antenna according to claim 11, wherein the antenna substrate is installed on a front of the moving object such that the front and the main flat surface are parallel, and the second polarization direction is an advancing direction of the moving object. ### Claim 13 (depends on 1) The moving object mounted radar antenna according to claim 1, wherein the moving object mounted radar antenna is mounted on one of a wearable device or a portable device, the wearable device is wearable by a body of a person or an animal or a portable device carried by a person. ### Claim 14 A module, comprising: a transmission unit configured to transmit a transmission wave to an object, wherein the module is configured to process a signal from a moving object mounted radar antenna, and the moving object mounted radar antenna includes: an antenna substrate including a main flat surface that faces the object, a first antenna element configured to receive a polarization component in a first polarization direction parallel to the main flat surface, a second antenna element configured to receive a polarization component in a second polarization direction perpendicular to the main flat surface; and a separation portion configured to electrically separate the first antenna element and the second antenna element, wherein the first antenna element, the second antenna element, and the separation portion are on the antenna substrate; a first reception unit configured to receive a first polarization component in the first polarization direction of a reflected wave via the first antenna element, wherein the reflected wave is received from the object; a second reception unit configured to receive a second polarization component in the second polarization direction of the reflected wave via the second antenna element; and a signal processing unit configured to process a signal for each of the first polarization component and the second polarization component. ### Claim 15 (depends on 14) The module, according to claim 14, wherein the antenna substrate is on a front of a moving object such that the front and the main flat surface are parallel, and the second polarization direction is an advancing direction of the moving object. ### Claim 16 (depends on 15) The module, according to claim 15, wherein the signal processing unit is further configured to estimate an azimuth angle based on the received first polarization component and the second polarization component, and the azimuth angle is between a center line that penetrates a center of the main flat surface along a direction perpendicular to the main flat surface and a line that connects the center and the object. ### Claim 17 (depends on 15) The module, according to claim 15, wherein the signal processing unit is further configured to estimate an elevation angle based on the received first polarization component and the second polarization component, and the elevation angle is between formed by a horizontal plane in which a center line that penetrates a center of the main flat surface along a direction perpendicular to the main flat surface extends and a line that connects the center and the object. ### Claim 18 (depends on 14) The module, according to claim 14, wherein the moving object mounted radar antenna further includes a third antenna element configured to receive a polarization component in a third polarization direction parallel to the main flat surface and orthogonal to the first polarization direction, the module further includes a third reception unit configured to receive a third polarization component in the third polarization direction of the reflected wave via the third antenna element, and the signal processing unit is further configured to process a signal for the received third polarization component. ### Claim 19 A moving object mounted radar antenna system, comprising: a moving object mounted radar antenna including: an antenna substrate including a main flat surface that faces an object; a first antenna element configured to receive a polarization component in a first polarization direction parallel to the main flat surface; a second antenna element configured to receive a polarization component in a second polarization direction perpendicular to the main flat surface; and a separation portion configured to electrically separate the first antenna element and the second antenna element, wherein the first antenna element, the second antenna element, and the separation portion are on the antenna substrate; and a module including: a transmission unit configured to transmit a transmission wave to the object; a first reception unit configured to receive a first polarization component in the first polarization direction of a reflected wave via the first antenna element, wherein the reflected wave is received from the object; a second reception unit configured to receive a second polarization component in the second polarization direction of the reflected wave via the second antenna element; and a signal processing unit configured to process a signal for each of the first polarization component and the second polarization component.